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smb: do not test the return value of folio_start_writeback()

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In preparation for removing the return value entirely, stop testing it
in smb.

Link: https://lkml.kernel.org/r/20231108204605.745109-4-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Steve French <sfrench@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Matthew Wilcox (Oracle) 2023-11-08 20:46:04 +00:00 committed by Andrew Morton
parent 8525d5984b
commit a9540e3562
1 changed files with 2 additions and 4 deletions
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6
fs/smb/client/file.c
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@ -2706,8 +2706,7 @@ static void cifs_extend_writeback(struct address_space *mapping,
*/
if (!folio_clear_dirty_for_io(folio))
WARN_ON(1);
if (folio_start_writeback(folio))
WARN_ON(1);
folio_start_writeback(folio);
*_count -= folio_nr_pages(folio);
folio_unlock(folio);
@ -2742,8 +2741,7 @@ static ssize_t cifs_write_back_from_locked_folio(struct address_space *mapping,
int rc;
/* The folio should be locked, dirty and not undergoing writeback. */
if (folio_start_writeback(folio))
WARN_ON(1);
folio_start_writeback(folio);
count -= folio_nr_pages(folio);
len = folio_size(folio);